A few days ago, our clients had problems with their on-premise mail server deployment. Their Zimbra services are down and mailbox service could not restart. After a quick check, it turns out that one of the disk partitions is full because there is an incorrect mounting disk. As it uses incorrect folder/disk, backup process filling up…
Back in 1995, after graduating from high school, I worked as a machine operator on a small factory at Cikarang Bekasi, a suburban city east Jakarta. Because of too many wasted time and as my effort to lift up my job quality, in 1996 I decided to go to a college at the night, after…
I have a dynamic IP from my internet service provider and sometimes it takes longer to SSH to my server as it needs to resolve the address. On static IP, I can put the address into public DNS server to a quick resolving process, but as it uses dynamic IP, I would need to use…
Below is a list of an interesting link I’ve read this week. Some of them are quite impressive as I’ve read in the past and looking at again this week 🙂 France’s OVH to triple spending to take on Google, Amazon in cloud computing Lessons Learned from 30 Years of Minix When House Hunting Became…
Sometimes we have a bunch of over quota message filling up Zimbra queue, with detail as below : 197CF170F9 59761 Wed Oct 24 09:49:48 email-palsu@vivianchow.id (host alt1.gmail-smtp-in.l.google.com[74.125.195.27] said: 452-4.2.2 The email account that you tried to reach is over quota. Please direct 452-4.2.2 the recipient to 452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp m3-v6si2776998pld.435 – gsmtp (in reply to…
A couple of month ago, there is an ‘accident’ at the provider, data in several blogs, especially my English blog was erased. I need to recover its blog content from the backup server even the available backup was couple months before the accident. It’s better than nothing. To export-import post on WordPress, the fastest way…
I have some Amazon Lightsail Instance, a group of small server used as a load balancer for our SMTP cluster. Amazon Lightsail in short equivalent with DigitalOcean Droplet or Linode Node or a let say it is a simple set of VM comparing to Amazon EC2. As I started with a basic requirement for an SMTP…
Every time I do an internal review which is usually come out with a couple of big decisions, I have one question which is always flying around my head. The question is, “For how long it will always be like this?” Back in 1996, when I decided to take an opportunity to improve my educational…
On each Zimbra deployment strategy, I’ve never activate Failed Login Lockout Policy as it tend to block legitimate user from being logged in due to brute force attack from others. The legitimate users often become a victim for spammer or robot attempt to login. I would also prefer Fail2ban to block login attempt from spammer…